Re: [Possible REGRESSION, 4.16-rc4] Error updating SMART data during runtime and could not connect to lvmetad at some boot attempts

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On Tue, Mar 13, 2018 at 02:08:23PM +0100, Martin Steigerwald wrote:
> Hans de Goede - 11.03.18, 15:37:
> > Hi Martin,
> > 
> > On 11-03-18 09:20, Martin Steigerwald wrote:
> > > Hello.
> > > 
> > > Since 4.16-rc4 (upgraded from 4.15.2 which worked) I have an issue
> > > with SMART checks occassionally failing like this:
> > > 
> > > smartd[28017]: Device: /dev/sdb [SAT], is in SLEEP mode, suspending checks
> > > udisksd[24408]: Error performing housekeeping for drive
> > > /org/freedesktop/UDisks2/drives/INTEL_SSDSA2CW300G3_[…]: Error updating
> > > SMART data: Error sending ATA command CHECK POWER MODE: Unexpected sense
> > > data returned:#0120000: 0e 09 0c 00  00 00 ff 00  00 00 00 00  00 00 50
> > > 00    ..............P.#0120010: 00 00 00 00  00 00 00 00  00 00 00 00  00
> > > 00 00 00    ................#012 (g-io-error-quark, 0) merkaba
> > > udisksd[24408]: Error performing housekeeping for drive
> > > /org/freedesktop/UDisks2/drives/Crucial_CT480M500SSD3_[…]: Error updating
> > > SMART dat a: Error sending ATA command CHECK POWER MODE: Unexpected sense
> > > data returned:#0120000: 01 00 1d 00  00 00 0e 09  0c 00 00 00  ff 00 00
> > > 00    ................#0120010: 00 0 0 00 00  50 00 00 00  00 00 00 00 
> > > 00 00 00 00    ....P...........#012 (g-io-error-quark, 0)
> > > 
> > > (Intel SSD is connected via SATA, Crucial via mSATA in a ThinkPad T520)
> > > 
> > > However when I then check manually with smartctl -a | -x | -H the device
> > > reports SMART data just fine.
> > > 
> > > As smartd correctly detects that device is in sleep mode, this may be an
> > > userspace issue in udisksd.
> > > 
> > > Also at some boot attempts the boot hangs with a message like "could not
> > > connect to lvmetad, scanning manually for devices". I use BTRFS RAID 1
> > > on to LVs (each on one of the SSDs). A configuration that requires a
> > > manual
> > > adaption to InitRAMFS in order to boot (basically vgchange -ay before
> > > btrfs device scan).
> > > 
> > > I wonder whether that has to do with the new SATA LPM policy stuff, but as
> > > I had issues with
> > > 
> > >   3 => Medium power with Device Initiated PM enabled
> > > 
> > > (machine did not boot, which could also have been caused by me
> > > accidentally
> > > removing all TCP/IP network support in the kernel with that setting)
> > > 
> > > I set it back to
> > > 
> > > CONFIG_SATA_MOBILE_LPM_POLICY=0
> > > 
> > > (firmware settings)
> > 
> > Right, so at that settings the LPM policy changes are effectively
> > disabled and cannot explain your SMART issues.
> 
> Yes, I now good a photo of one of those boot failures I mentioned, at it seems 
> to be related to blk-mq, as the backtrace contains "blk_mq_terminate_expired".
> 
> I add the screenshot to my bug report.
> 
> [Possible REGRESSION, 4.16-rc4] Error updating SMART data during runtime and 
> boot failures with blk_mq_terminate_expired in backtrace
> https://bugzilla.kernel.org/show_bug.cgi?id=199077
> 
> Hans, I will test your LPM policy horkage for Crucial m500 patch at a later 
> time. I first wanted to add the photo of the boot failure to the bug report.
> 
> Ming and Bart, I added you to cc, cause I had to do with you about another 
> blk-mq report, please feel free to adapt.

Looks RIP points to scsi_times_out+0x17/0x1d0, maybe a SCSI regression?

Thanks,
Ming



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